Improvement in treadles for sewing and other machinery



UNITED STATES P ATENT OEEIOE.

IMPROVEMENT IN TREADLES FOR SEWING AND OTHER MACHINERY.

Specification forming part of Letters Patent No. 107,921, dated October4, 1870. v

To all whom it may concern:

Be it known that I, GEORGE BYRON KIRK- HAM, of 167 East Thirty-thirdstreet, city, county, and State of New York, have invented a new anduseful Foot-Power Machine; and I y do hereby declare the following to bea full,

machines as hand-lathes, sewing-machines,

jig-saws, and the like.

In Fig. lis shown, at A A, the fly-wheel or Abelt-wl1eel, and B isaratchet-wheel which is" permanently'attached to it.

O is the pawl or dog, which plays in andv out of the teeth b b b. Thispawl'O turns on a pivot attached to the wheel D, and rests against theface of the wheel B, being pressed against it by the spring E. (Betterseen in Fig. 3.) The spring E, being fastened to the wheel D, and thefriction ofthe pawl O against the' face of B, will causethe pawl C torise when A B goes around by its momentum in the direction of the arrowbut when the wheel D is-impelled in the same direction the pawl isbrought down behind one of the teeth b b, and thus gives the fly-wheel Athe desired impetus.

` The raising of the pawl O by the friction against the face of B when Awhirls around prevents the terrible clatter which results when a pawldrops from tooth to tooth of a ratchet-wheel.

It is evident that to make it useful it must be adapted to'variousmachines; for, while a footh-lathe always has an up-and-down treadle, asewing-machine has a rocking-treadle.

It is adapt-ed for the foot-lathe by means of the belt FF, also seen inFig. 2. This belt passes over the wheel D, and to prevent it fromslipping has holes punched in it, which t little pins, d d, driven intoD. At the lower ends the belt has one end fastened to the treadle G,which treadle G is pivoted at its lower end, and works up and down inthe usual manner, while the other end of the belt F is fastened to astick, H, which is hinged to Gr, and is drawn toward it by the spring I.

When the invention is applied to a sewing"- machine which has a rockingtreadle, it is done by means of a cord or round belt', J J, passing overa groove in the wheel' D, crossing and fastened to each end of therocking.

treadle K K', which is pivoted in the center, and has in front, at K', aspring, L, which pulls lthe belt J continually taut.

Having described my invention, what I claim therein as new, and desireto secure by Letters Patent, is-

1. The arrangement `of the wheel B, friction-pawl O, and spring E,arranged substantially as and for the purposek set forth.

2. The wheel D, with its accessories E and d d, and belts F and J, withthe treadle H,

and springs I and L, as described, and for the purpose set forth.

GEO. BYRON KIRKHAM. Witnesses:

H. M. PAIN, STEPHEN PAIN.

